Chinese President Xi Jinping, center, sits with former Chinese President Hu Jintao, fifth left, and Jiang Zemin, fifth right, after delivering his speech at the opening ceremony of the 19th Party Congress held at the Great Hall of the People in Beijing, China, Wednesday, Oct. 18, 2017. Xi on Wednesday urged a reinvigorated Communist Party to take on a more forceful role in society and economic development to better address "grim" challenges facing the country as he opened a twice-a-decade national congress. (AP Photo/Ng Han Guan)